Driving gear of narrow fabric looms



June 30, 1931. H. HAYWOOD DRIVING GEAR OF'NARROW FABRIC LOOMS Fil'ed Sept. 14, 1929 3 Sheets-Sheet l June 30, 1931. H, HAYWOOD 1,812,480

DRIVING GEAR OF NARROW FABRIC LOOMS Filed Sept. 14, 1929 3 Sheets-Sheet 2 Ju ne 301.1931, 1 TH. HAYWOIOD 1,812,480

DRIVING GEAR OF NARROW FABRIC LOOMS' Filed Sept. 14, 1929 5 Sheets-Sheet 3 i T Fi g; Qf/mwgm' Patented June 30, 1931 UNITED STATES PATENT OFFICE HUBERT- HAYWOOD, OF WIRKSVJORTH, ENGLAND, ASSIGNOB- T0 THEIHAYWOOD NAR- ROW FABRIC LOOM COMPANY LIMITED, 01? THE HAGUE, BROADBOTTOM, CHESTER,

ENGLAND DRIVING GEAR OF NARROW FABRIC LOOMS Application filed September 14, 1929, Serial No. 392,547, and in Great Britain November 10, 1928.

This invention relates to improvements in the driving gear of looms particularly of looms for weaving narrow width fabrics.

According to the. invention the loom is driven through clutch mechanism so as to give a smooth and steady starting up and which clutch mechanism is also acted upon by ,warp and/or weft stop motions so that should a warp or weft thread break or the shuttle become exhausted the clutch mech anism will be disengaged and the loom stopped.

' The invention will be described with referen'ce to the accompanying drawings .1 Fig. 1 .is a transverse sectional elevation of a loom for. weaving narrow width fabrics having the invention applied thereto.

Fig. 2 is a front elevation of part of the loom. i

i Fig. 3 is a longitudinal section through the clutch mechanism.

Fig. 4 is an end view of same. Fig. 5 is a plan. Fig. 6 is a side view. of vibrating mechanism formingpart of the warp stop motion.

Fig. 7 is a perspective view of shuttle.

The clutch mechanism is mounted on the main driving shaft of the loom or on a cormter shaft connected therewith, it being shown in the drawings moimted on a counter shaft longitudinal movement on the shaft by the collar 7) which is aflixed thereon. The other member B ofthe clutch is afiixed tothe shaft A by the. pin or peg a which passes through a longitudinal slot 6 in the boss of the member B The. clutch member B is thus constrained to rotate with the shaft A but is free to slide longitudinally in relation thereto. The member B may be affixed to the shaft A by a key feather or in any other suitable wayinstead of by the peg a so. that it will rotate therewith but be free to slide longitudinally in relation thereto.

The member B is continuously driven from the main shaft A by a chain a which gears with a sprocket wheel 6 on the member B Any other suitable drive such as belt or gears may be substituted for the chain drive shown in the drawings.

The sliding member B is formed with a sleeve or boss I; and a tapered flange If. A s Jring B bears against the outer face of the ange b and normally keeps the two clutch members B and B in driving engagement but on rotation of the rocking arm C the I unbevelled portion 0 of the arm C comes into engagement with the tapering face of the flange b and moves the member B along the shaft against the pressure of the spring B so that the two clutch members are dis connected and the loom is stopped.

The movement of the rocking arm C is controlled by both a warp stop motion and a weft stop motion so that should a warp thread break or a weft thread break or a shuttle become exhausted the loom will be stopped. A horizontal lever E is formed integrally with the arm C or may be formed separately therefrom and be afiixed on the rocking shaft C carrying the arm C and during the normal running of the loom a projection e on the end of the lever engages a catch 7 on the upper end of a three armed pivoted lever F being held in contact therewith by the spring E Thus as long as there is no movement of the lever F the lever E is held in its normal position and the arm C remains out of contact with the tapering flange 6 of the clutch member B Should however the lever F be moved about its pivot the catch f will be moved from under the end of the lever E and the spring will pull down the lever E causing the shaft C to rotate and the arm C to move the clutch member B out of engagement with the member B The lever F is connected through suitable mechanism which will be'hereinafter described so that on the'breaking or absence of a warp or weft thread the arm F will be operated to release the horizontal arm E.-

A sinker G is suspended from each warp thread y. The sinker G is of the shape shown inFigil being provided with a slot 9 having enlarged ends '9 9 adapted to engage one or the other of two bars 7L 7L arranged'longihflih lly ah he a k of he 90m. T .92:- 1 iihe t ea of he-sinker t sshhwn ith the slot in engagement with the front bar 72, and with the recess engaging with the warp thread 1 The number of sinkers Gr provided for eachheadot-theqloom.is equal to the maximum number of warp threads that will be employed and if in the weaving of fabric less Warp "threads are employed; the surplus sinkers are suspended from. the rean bar hclear of the stop, motion mechanism. 7 7 The front o t' eachsinher G is formedwith adownwardly projecting finger g? which when the recess 9? is engaged 'by the warp thread y is out of the patlro f a vibrating bar J carried: on two arms y" but which when" the yarn breaks will fall down intothe of thebar' J. The arms j'clarrying the bar} are pivotally mounted on 'a shaft Jhmounted in the arms 7' pivoted n studs or short shafts j affixed to the frame ofgthe loom The "centre lines ofshafts j? are approximately in the same horizontal-plane as the top edge of the bar J and'the arms 3' are held against stopsy' by. springs y'i- A lever J afiixedto the bar ,I andpivotallymounted' on the shaft J isitormed at its lower endJi anda connecting rodK is pivotally connected to the I end-j? The other endof-"theconnecting rod K is pivotally connected to a lever K pivot;- ed onthe frame of'the' loom 'A roller is is mounted on the upper end ofthe lever K and-engages a cam K 'mount'ed on the shaft A. A spring 72 holds the roller is in engagement with the face of the cam K The shaft v 3 onwhich: the arms carrying the bar J are mounted, carries one end of'a Connecting rod M, the other end of which is pivotally connected to the lever F; t I

During the normal workingfofthe loom I the bar J is oscillated from the arm K' moving about the shaft'J; on which the rod M is mountedso that no movement is imparted to this rod; Onthe breaking of a warp thread however the sinker G: suspended from such thread falls and the downwardly projecting finger g comes into the path-of the oscil' lating bar J preventing movement thereof. 'As however the lever K continues to be oscillated by the cam K the thrust on-the rod K willcause the lever J shaft J and arms 7' to pivot about the shaftsj -but as theedgeo of the bar J coincides with the centre line or the shaft 7' there will bern-o undue pressure exerted by thebar J onith-e sinker G; i i

h me ementhi' h hah ll h .9m

municated through the rod M to the lever F and the catch 7 on the latter will be moved from under the 'end of the lever E so that the end of thislever will be pulled down by the spring E and the clutch members B and B dis ng g d, sp QWly des r hei.

thread guide n is pivotally mounted on each shuttle carrier N and the weft thread :0 passes around the guide a after leaving the shuttle. The-guide n isoprovidedwith a dc? pending. finger. at and;the guideislcontrolled by a light spring a which is not suflicient to overcome the tension of the yarn on the guide but which when the yarn breaks or the shuttleis exhausted will rotate the guidei'so that t fing r. n illmhya n o uch posi th t. t il i'cem ntQ ontahtw th helupp r fi a p ate hrml? asfih huttle-parser N etch s h eh f'i tr ehfp adarm prov d d or. ea hshut h arr e of: heleom and; ahh arm is mohn ed n esh r shaim. ach. ho tsha t lse a r e a d wnwar ly epend n e er P? he hdfi f all: thelever 22 i @01 heated t h h r bye arP q liat hi n ne amt P s mQ SIhQ ma ement s QQ mllIl cated to allthe arms."

of he leve s zz e hi hh i qrmofa Crank lev r etheherizontalarm 1' at which, a ens conne tin od tz s pi o al y aflhie Th hhhhh tin r d 1? exte ds o n a ds andits a r ndrass s h hus the mite nd of. the herizentali members, f; h three armed lever A nut ri's screwed on the law ei hdo h o tahd h a es th; underside of the arm F so thatwlientherod R is raised the lever E willibe oscillated and moved out of'engagement the; endkof he le r E. thus cau in the. clut h memb 13} a te e dis hhectetljas previou ly described,

Wh n a We t h eadahreaks i abse hrhu hj xhahsti n of theshuttleithe hrr r pend n hreadisuide mo ed: by its pr ng 86 mtt ng r nw lliieng h he 1 p QfthQ- QP ausin h latt to P the;., 11 em nt f the arm. i is, conv yed au h eve Fah ihar. P 20. h bell crank e r 2 r an t e sillation of: the latte aises the nh h ing Qd B'. ndz herer y au e h sth p h Qfith 1QQII1:-.

I1 Qrd hat he lo qiamayhe t pp d at any time. by. t e. perath oid' xtehdins t9 he front t he 100111 s fixedi t eiboq io ae h ev r F Q hathy; pull n the. ed 5 e ward. h pp r 6. l' 9 v r i s Qv d-"f hm undh fihe ndhfthe. eve aad he t o utch embers B hd' B d en sased;

he. lever. hi' slproyi edth a handl v fhr ar in the [19911 after? t has; een st wed; T 9..-. lepr i9n; o i h ha le. causes the leverwe rota e; wi h the: haft 0. and he .armQ o ra k-s thetitsh yell d thesis m edav y. fr athe tap r ng-fleas? 6 thus allowin the spring B to bring the two clutch members B and B into engagement. I The movement of the lever E also allows 5 the catch f on lever F to be brought under the end 6 of the lever E so that both the warp and weft stop motions can be reset.

What I claim as my invention and desire to protect by Letters Patent is 1. In a loom for weaving narrow width fabrics the combination with a driving shaft, of a driven shaft, one member of a friction clutch mechanism affixed on said driving shaft to rotate therewith but free to slide thereon, a second member of the friction clutch mechanism mounted on said'driving shaft so that it can rotate thereon, means for preventing the second clutch member from sliding on said driving shaft, gearing connecting the second clutch member with the driven shaft, a spring normally pressing the two clutch members together, a rocking arm which when rotated separates the two clutch members to stop the loom, a warp stop motion which actuatesthe rocking arm on breakage of a warp yarn and weft stop motion which also actuates the rocking arm on breakage of a weft yarn or on exhaustion of a shuttle.

2. In a loom for weaving narrow width fabrics the combination with a driving shaft of a driven shaft, one member of a friction clutch mechanism affixed on said driving shaft to rotate therewith but free to slide thereon, a second member of the friction clutch mechanism mounted on said driving shaft so that it can rotate thereon, means for preventing the second clutch member from sliding on said driving shaft, gearing con necting the second clutch member with the driven shaft, a spring normally pressing the two clutch members together, a rocking arm which when rotated separates the two clutch members to stop the loom, a spring controlled 5 lever which actuates the rocking arm, a pivoted lever which normally holds the spring controlled lever from engagement with the rocking arm, a warp stop motion which releases the spring controlled lever on break- 5 age of a warp yarn and a weft stop motion which releases the spring controlled lever on breakage of a weft yarn on exhaustion of the shuttle.

3. In a loom for weaving narrow width fabrics the combination with a driving shaft, of a driven shaft, one member of a friction clutch mechanism aflixed on said driving shaft to rotate therewith but free to slide thereon, a second member of the friction clutch mechanismmounted on said driving shaft so that it can rotate thereon, means for preventing the second clutch member from sliding on said driving shaft, gearing connecting the second clutch member with the driven shaft, a spring normally pressing the two clutch members together, a rocking arm which when rotated separates the two clutch members to stop the loom, a spring controlled lever which actuates the rocking arm, a pivoted lever which normally holds the spring controlled lever from engagement with the rocking arm, a warp stop motion which releases the spring controlled lever on breakage of a warp yarn, a weft stop motion which releases the spring controlled lever on breakage of a weft yarn on exhaustion of a shuttle, and a hand operated lever which releases the spring controlled lever when the operator desires to stop the loom.

4. In a loom for weaving narrow width fabrics the combination with a driving shaft, of a driven shaft, one member of a friction clutch mechanism aflixed on said driving shaft to rotate therewith but free to slide thereon, a second member of the friction clutch mechanism mounted on said driving shaft so that it can rotate thereon, means for preventing the second clutch member from sliding on said driving shaft, gearing connecting the second clutch member with the driven shaft, a spring normally pressing the two clutch members together, a rocking arm which when rotated separates the two clutch members to stop the loom, a spring controlled lever which actuates the rocking arm, a

pivoted lever which normally holds the spring controlled lever from engagement with the rocking arm, a sinker suspended from each warp thread, a vibrating bar into the path of which a sinker falls on breakage of a warp thread and prevents oscillation thereof, pivoted arms carrying said vibrating bar, links connecting said arms with the pivoted lever so that when the movement of the vibrating bar is arrested the pivoted lever 3 my hand.

HUBERT HAYWOOD. 

